An unknown assailant douses an unassuming student with an ice-cold slushie.

One of the most hilarious running gags on Fox's hit series "Glee" is the "Slushie Facial," where an unknown assailant douses an unassuming student with an ice-cold slushie. Rachel, Finn, Puck, Kurt...they've all been on the wrong side of a Big Gulp.